Echo JS 0.11.0

is parsing CLI options something which needs a lot of performance? working across OSs is IMHO more important

I may be wrong but IMHO CLI option parsing really isn't the bottleneck in most apps. Also, it's something that's done once per execution of a program. It's a little puzzling why such an emphasis was made on performance in this repo.

I use yargs and find the API very powerful for complex CLI apps.
This one is superfast but feature-wise it's more comparable to minimist than yargs. Nothing wrong with it but it's not an apple to apple comparison. Great job with the performance though.